Update to eslint-plugin-matrix-org 0.8 (#23825)

* Update to eslint-plugin-matrix-org 0.8

* Exclude some eslint rules for specs

* Fix eslint tests path

src/vector/platform/WebPlatform.ts

@@ -40,7 +40,7 @@ function getNormalizedAppVersion(version: string): string {
 }
 
 export default class WebPlatform extends VectorBasePlatform {
-    constructor() {
+    public constructor() {
         super();
         // Register service worker if available on this platform
         if ('serviceWorker' in navigator) {